code: def join(self, inputs):
      print("All done")
      self.next(self.end)
  
file_path: metaflow/test/env_escape/example.py
imports: import os
  import sys
  from metaflow import FlowSpec, step, conda
label_desc: Use image node_id 4 for calling the EscapeTest obj's underlying member method code with example usage: obj.join(inputs) without return types